My feature request is to have a visual display of my weekly or monthly run by distance. I recently moved from Nike to Garmin and really miss this stats. I find it really motivating to see how much I have run and miss this a lot.
I don't think I am the only one that feels this way because there is a web site setup to transfer the Garmin data to the Nike site.
It can be found at: http://www.awsmithson.com/tcx2nikeplus/
Ian